Lyme Disease Epidemiology and Incidence
Author: admin
Lyme disease is the most typical vector-borne infection inside the United States. In 1997, there were 12,801 instances reported in the United States. It is transmitted by ticks from the genus Ixodes. The Ixodes tick goes via a 2-year life cycle that’s composed of three stages: larva, nymph, and adult. Tick larvae acquire the spirochete via a blood meal from an infected host. Both the nymph and female adult infect humans. A tick should be attached for at least 24 h to transmit the spirochete. Tick engorgement and attachment for 72 h are predictors of subsequent human infection. Ixodes ticks from the northeastern and midwestern United States belong towards the Ixodes dammini (scapularis) species, inside western United States to Ixodes pacificus, in Europe to Ixodes ricinus, and in Asia to Ixodes persulcatus. Rodents and small mammals are the natural hosts of the larval and nymphal stages. The incidence of Lyme disease reflects a changing dynamic between the principal reservoir, the white-footed mouse, its food supply, as well as the suitability of its local habitat. Deer, horses, dogs, and other larger mammals and birds may perhaps be occasional hosts towards the adult ticks. Most instances have their onset throughout summer and occur in association with hiking, camping, and residence in wooded, rural, or coastal areas.
Related Articles...
Lyme Disease General Considerations
Author: admin
Lyme disease is a tick-borne illness caused by the spirochete B burgdorferi. Lyme disease can be divided into early disease (stage 1, EM), disseminated infection (stage 2), and late disease (stage 3, persistent infection). The first stage involves the skin, followed by stages 2 and 3, which often affect the skin, joints, CNS, and heart. However, any of the stages may fail to appear or may overlap with one another
| Stage | Timing |
|---|---|
| Localized erythema chronicum migrans | Early infection |
| Disseminated infection | Within days or years |
| Persistent infection | Months to years |
Related Articles...
Posted in Complication, Diagnosis, Prevention, Prognisos, Treatment, lyme disease, sign & symptoms | 
Tags: diagnosis, lyme disease, prognosis, treatment
Lyme Disease Treatment
Author: admin
Once diagnosed, Lyme disease may be treated. Physicians can figure out if an individual has been infected by the Lyme disease organism making use of a easy blood check; nevertheless, some men and women test negative but have the disease. The CDC warns against unproven tests and it is advised to check for correct testing procedures. Infection is usually treated by taking certain antibiotics. Nonetheless, no immunity is conferred from infection so a person could get Lyme disease again from another infected tick. Pets and other animals can contract Lyme disease as well, exhibiting symptoms similar to those in humans. Veterinarians can test for Lyme disease in pets and domestic animals exhibiting suspicious signs of arthritis (in younger animals), heart difficulties, or neurological signs.
Related Articles...
Early Symptomps of Lyme Disease
Author: admin
Early symptoms of Lyme disease appear 3 to 32 days after the bite of an infected tick which was attached for at least 24 hours.
Most people with Lyme disease will get a rash called “erythema migrans” where they were bitten. The rash starts as a small red round area, which usually gets bigger and can reach two or more inches across. The center of the rash may clear giving a “bull’s eye” appearance.
Other symptoms during the early stage of Lyme disease include:
- Chills
- Fever
- Headache
- Tiredness
- Stiff neck
- Joint pain
- Swollen lymph nodes
- Rash that spreads to other parts of the body
Early Lyme disease is usually curable using antibiotics that your health care provider can prescribe. Without treatment, the disease may progress to arthritis, meningitis, facial nerve paralysis, or hearing abnormalities. The later symptoms may occur in people who did not recognize early symptoms. Swelling and joint pain may recur over many years.
Related Articles...
Lyme Disease Treatment
Author: admin
Early lyme disease responds readily to several oral agents (such as doxycycline, amoxicillin, or cefuroxime), which are usually prescribed for 2-3 weeks. There are few published, controlled trials that compare different regimens for late Lyme disease. Intravenous therapy, usually ceftriaxone or penicillin, is used for 2-3 weeks for late Lyme disease.
- Erythema migrans. In EM, oral antibiotic therapy with doxycycline shortens the duration of the rash and prevents the development of late sequelae. Amoxicillin is also effective and preferred for children under 9 years of age and in pregnant or lactating women.
- Musculoskeletal disease. Treatment for one month with oral doxycycline or amoxicillin is usually effective. For refractory cases, intravenous therapy with ceftriaxone or penicillin G, and arthroscopic synovectomy may lead to clinical improvement. Analgesics such as acetaminophen or nonsteroidal anti-inflammatory agents should be used in patients with symptomatic arthritis.
- Neurologic disease. Patients with facial nerve palsy alone can be treated with oral doxycycline or amoxicillin. Intravenous penicillin G, ceftriaxone, or cefotaxime is effective for meningitis, cranial or peripheral neuropathies, encephalitis, or other late neurologic complications.
Related Articles...
Laboratory findings in Lyme Disease
Author: admin
The diagnosis of Lyme disease is made on clinical findings, epidemiologic characteristics, and an elevated antibody response to B burgdorferi. The offered laboratory tests (with the exception of a positive culture from an EM lesion) could be unreliable. Serologic testing only should be undertaken when clinical and epidemiologic functions suggest Lyme diseaseas the diagnosis. Most patients with B burgdorferi are discovered to have detectable antibodies when tested with enzyme-linked immunosorbent assay (60-70% within 2-4 weeks of infection and 90% by the disseminated and persistent stages).
Nonetheless, serologic tests lack standardization, their accuracy is generally unsubstantiated, and false-positive outcomes are typical. IgM antibody appears 2-4 weeks after the EM lesion, peaks at 6-8 weeks, and declines soon after 4-6 months. IgG antibody appears 6-8 weeks right after the EM lesion, peaks at 4-6 months, and remains at low levels despite antibiotic therapy. A fourfold rise in antibody titer would be suggestive of recent infection. Western blot analysis is employed to confirm results obtained by enzyme-linked immunosorbent assay. The finding that a patient has substantial amounts of anti-B burgdorferi-specific antibodies may be interpreted only in the context of the clinical setting. Demonstrating that a patient has an immune response against this organism doesn’t mean that the patient is actively infected or that any symptoms are necessarily related to B burgdorferi infection.
